Abstract One of the major goals field Milky Way dynamics is to recover gravitational potential field. Mapping would allow us determine spatial distribution matter—both baryonic and dark—throughout galaxy. We present a novel method for determining from snapshot phase-space positions stars, based only on minimal physical assumptions, which makes use recently developed tools deep learning. first t...

The paper gives an introduction to the gravitational radiation theory of isolated sources and to the propagation properties of light rays in radiative gravitational fields. It presents a theoretical study of the generation, propagation, back–reaction, and detection of gravitational waves from astrophysical sources. After reviewing the various quadrupole–moment laws for gravitational radiation i...

A time varying space-time metric is shown to be a source of electromagnetic radiation. The post-Newtonian approximation is used as a realistic model of the connection between the space-time metric and a time varying gravitational potential. Large variations in the gravitational potential, during collisions of black holes or relativistic stars, are associated with the electromagnetic power spect...

Higher–dimensional theories imply that some constants, such as the gravitational constant and the strength of the gauge–couplings, are not fundamental constants. Instead they are related to the sizes of the extra–dimensional space, which are moduli fields in the four– dimensional effective theory. We study the cosmological evolution of the moduli fields appearing in brane world scenarios and di...

Einstein’s theory of general relativity which has been experimentally proved to be true gravity doesn’t need gravitational potential energy predict trajectory particles in space. This is because a purely geometric theory. Objects move along the geodesics curved space-time. The energy-momentum tensor that warps space-time as per field equations takes into account only energy/momentum matter and ...

We propose a feasible laboratory interferometry experiment with matter waves in a gravitational potential caused by a pair of artificial field-generating masses. It will demonstrate that the presence of these masses (and, for moving atoms, time dilation) induces a phase shift, even if it does not cause any classical force. The phase shift is identical to that produced by the gravitational redsh...